We're dividing 90363972 by 510 
The aim is to understand the frequency of 510 in 90363972.

Going ahead to step 1:
The number 510 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 510

Advancing to step 2:
510 goes into 90 0 times with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Bring next digit (3) of the dividend behind the 90 and repeat the process: 903 / 510

Going ahead to step 3:
The number 510 fits into 903 1 times, leaving a remainder of 393.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 510 from 903, we get 393.
Take the next digit (6) from the dividend and append it to 393, then repeat: 3936 / 510

Let's proceed to step 4:
3936 divided by 510 is 7 with a remainder of 366.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 3570 from 3936 to get 366.
Include the next digit (3) from the dividend after 366, then repeat: 3663 / 510

Step 5:
510 can be fit into 3663 7 times, resulting in a remainder of 93.
The number 7 becomes the next digit in our result. 
Result so far: 177.0
Subtracting 3570 from 3663 leaves us with 93.
Bring next digit (9) of the dividend behind the 93 and repeat the process: 939 / 510

Going ahead to step 6:
The number 510 fits into 939 1 times, leaving a remainder of 429.
The number 1 becomes the next digit in our result. 
Result so far: 1771.0
Deduct 510 from 939 and we're left with 429.
Bring next digit (7) of the dividend behind the 429 and repeat the process: 4297 / 510

Step 7:
4297 divided by 510 is 8 with a remainder of 217.
The next digit of our result is 8. 
Result so far: 17718.0
If we subtract 4080 from 4297, we get 217.
Fetch the next digit (2) from the dividend, attach it to 217 and continue: 2172 / 510

Moving on to step 8:
510 goes into 2172 4 times with a remainder of 132.
Record the quotient 4 as the next digit in the result. 
Result so far: 177184.0
The remainder is 132 after subtracting 2040 from 2172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Moving on to step 9:
1320 divided by 510 is 2 with a remainder of 300.
Put 2 as the next digit of the answer. 
Result so far: 177184.2
If we take 1020 away from 1320, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 10:
510 goes into 3000 5 times with a remainder of 450.
The next digit of our result is 5. 
Result so far: 177184.25
If we subtract 2550 from 3000, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Going ahead to step 11:
The number 510 fits into 4500 8 times, leaving a remainder of 420.
Use 8 as the next digit of our solution. 
Result so far: 177184.258
Subtracting 4080 from 4500 leaves us with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Moving on to step 12:
When dividing 4200 by 510, we get 8 with a remainder of 120.
Record the quotient 8 as the next digit in the result. 
Result so far: 177184.2588
Subtract 4080 from 4200 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Our division results in 177184.2588 with a remaining 0.0012.